The series: Colorado is 12-1 all-time against Arizona, including 4-1 in Boulder. The Wildcats' only win in the series came in the most recent meeting – 24-21 on Sept. 27, 1986. Arizona was ranked No. 10 nationally at the time.

Last week: CU lost at home to Southern Cal, 42-17; Arizona lost at home to Utah, 34-21.

Goodbye seniors: Saturday will mark the final home game for 28 Buffaloes seniors, including starting quarterback Tyler Hansen.

Due for a win?: CU is 0-4 at Folsom Field this season. The stadium opened in 1924 and Colorado has never gone through a season without winning a single game at Folsom Field.

500-500 club: Colorado running back Rodney Stewart has 561 rushing yards and 502 receiving yards. He's the first player in school history with at least 500 yards in each category in the same season. He's also the only player in the country in the 500-500 club this season. He needs 100 receiving yards to become the 27th player in FBS history with 3,000 rushing and 1,000 receiving yards for a career.

Wildcat to keep an eye on: QB Nick Foles. Despite his team's struggles, Foles continues to be one of the top quarterbacks in the country. He has thrown for 3,260 yards, with a 68.8 completion percentage, 22 touchdowns and only 10 interceptions. Part of what makes Foles dangerous is that he doesn't lock in on one target. Five Arizona players have at least 35 catches and eight have at least 16. With Foles as triggerman, Arizona has the top passing offense in the Pac-12 (and No. 4 in the country).

Buff to keep an eye on:QB Tyler Hansen. This is Hansen's last chance to play in front of the home crowd, and it's a good bet he wants to make it a memorable performance. Statistically, he's had a pretty good season – 2,279 yards, 16 TD, 6 INT – and he's got the ability to have an outstanding day against the Wildcats.

This and that: Not counting the 1931 meeting – for which stats are not available – CU has rushed for at least 175 yards in all but one meeting with the Wildcats (in 1986 the Buffs had 112 rush yards). … CU kicker Will Oliver has 51 points this season, one shy of the school's freshman record. … CU has allowed at least 31 points in nine of 10 games (CSU had 14 points against the Buffs). … Arizona has allowed 34 points or more seven times. Northern Arizona (10 points) and UCLA (12) are the only teams that failed to reach that number against the Wildcats. … Shaquille Richardson, cousin of CU receiver Paul Richardson, leads the Wildcats with three interceptions – one of which he returned for a touchdown. … Arizona is 0-4 on the road. … This will be the highest-attended CU-Arizona game ever. The record in the series is 45,503 (in Tucson) in 1985, but roughly 5,000 tickets remain for the 53,613-seat stadium.

How the Wildcats can win: Keep the pressure on offensively. The Wildcats have the ability to rack up a lot of points with Foles. Although the defense has allowed a lot of points, Foles could put up a ton against CU's inexperienced secondary. The higher scoring this game gets, the more likely Arizona is to come away with a win.

How the Buffs can win: Have fun, relax and let it loose. For a large chunk of this team (28 seniors) this is the last game ever at Folsom Field. If they can enjoy the moment and let their emotions work to their advantage, it could be a great day for the Buffaloes.